A truck refrigeration system also known as a reefer. It is an internal container used for intermodal freight transport that is refrigerated for the transportation of temperature sensitive cargo. The general options are available to support freight in a cool or fresh temperature range or in a frozen temperature range. A cold range is usually used for loads such as fresh food or other perishable items. A truck refrigeration system could be temperature adjustable to haul heated goods as well, but it's less common. You can find the truck refrigeration system using a couple of different cooling methods. You may see both diesel powered generators and cryogenic cooling systems. How does the Truck Refrigeration system works The truck refrigeration system operates on a closed system. Removing heat and maintaining a steady temperature is what a refrigeration system is all about. They operate by collecting and pumping heat throughout the systems. Here are the core components that are making this work.